Foldable straightener



FIG. 1 is a right side view of a “foldable straightener” showing my design;

FIG. 2 is a left side view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a top view thereof;

FIG. 6 is a bottom view thereof;

FIG. 7 is a perspective view thereof in an unfolded configuration;

FIG. 8 is a perspective view thereof in an folded configuration; and,

FIG. 9 is a perspective view in an open position. 

The ornamental design for a “foldable straightener”, as shown and described. 